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Silurid
Siluridae is the nominate family of catfishes in the order Siluriformes. About 105 living species of silurids are placed in 12 or 14 genera. Although silurids occur across much of Europe and Asia, they are most diverse in Southeast Asia, beyond which their diversity decreases in temperate East Asia, the Indian subcontinent, Southwest Asia, and Europe. Silurids are apparently absent from much of central Asia. The family can be divided into two groups, a temperate North Eurasian clade and a more diverse subtropical/tropical South and Southeast Asian clade. Notable species *Wels catfish, ''Silurus glanis'' *Phantom catfish, ''Kryptopterus vitreolus'' *''Wallago attu'' *Wallagonia leerii *Aristotle's catfish *Amur catfish *Phalacronotus apogon *Ompok Common Features The Family Siluridae is very diverse, with not very many distinctive features among all species, but some major ones include gigantism, and smaller versions of attributes that Catfish regularly have, such as smaller fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ompok
''Ompok'' is a genus of fish in the family Siluridae found in lakes and large rivers throughout South and Southeast Asia. Taxonomy The genus is recognized to be paraphyletic. The species of ''Ompok'' have been grouped into species groups, such as the ''Ompok bimaculatus'' group (i.e. ''O. bimaculatus'', ''O. malabaricus'' and ''O. miostoma''), the ''O. eugeneiatus'' group (i.e. ''O. eugeneiatus'' and ''O. pinnatus''), the ''O. hypophthalmus'' group (i.e. ''O. hypophthalmus'', ''O. rhabdinurus'' and ''O. urbaini'') and the ''O. leiacanthus'' group (''O. fumidus'', ''O. jaynei'' and ''O. leiacanthus'').Bornbusch, A.H. (1995): Phylogenetic relationships within the Eurasian catfish family Siluridae (Pisces: Siluriformes), with comments on generic validities and biogeography. ''Zoological Journal of the Linnean Society, 115 (1): 1–46.''Ng, H.H. (2003): A review of the ''Ompok hypophthalmus'' group of silurid catfishes with the description of a new species from South-East Asia. ''Jour ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amur Catfish
The Amur catfish, or Japanese common catfish, ''Silurus asotus'', is a species of catfish (sheatfish), family Siluridae. It is a large freshwater fish found in continental East Asia and in Japan. It prefers slow-flowing rivers, lakes, and irrigation canals. Its appearance is typical of a large silurid catfish. Larval ''S. asotus'' specimens have three pairs of barbels (one maxillary, two mandibular), while adult fish have only two pairs (one maxillary, one mandibular); second pair of mandibular barbels degenerates. , 1999, Osamu Yada and Atsushi Furuk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wallago
''Wallago'' is a genus of catfishes order Siluriformes of the family Siluridae, or sheatfish. They are found in rivers throughout southern and southeastern Asia. The only extant species of this genus is ''Wallago attu''. Taxonomy The monophyly of this genus is ambiguous and it is not diagnosed by any synapomorphies. The name is derived from Wallagoo, a Telugu name in Vishakapatnam noted by Patrick Russell in his 1803 book. Species There are currently 2 recognized species in this genus, of which only one is recent: * ''Wallago attu'' (Bloch & J. G. Schneider, 1801) (Wallago) *† ''Wallago maemohensis'' (Roberts, 2014) (extinct since the Miocene) For a long time, the Wallago genus was thought to include more species, namely '' Wallagonia leerii'' (helicopter catfish), '' Wallagonia maculatus'' and '' Wallagonia micropogon''. However, a close investigation by Tyson R. Roberts of their osteological features yielded that all these species actually belong to two entirely separate g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belodontichthys
''Belodontichthys'' is a genus of sheatfishes native to Asia. Species There are currently two recognized species in this genus: * '' Belodontichthys dinema'' (Bleeker, 1851) * '' Belodontichthys truncatus'' Kottelat & Ng, 1999 ''B. dinema'' originates from Laos, Vietnam, Thailand, Malay Peninsula, Sumatra, and Borneo. This species grows up to about 100.0 centimetres (39.4 in) TL. ''M. dinema'' occurs in medium to large-sized rivers and is found from middle depths to the surface in deeper parts of large rivers. This species feeds on smaller fish near the water surface. It is an excellent game fish which can be caught using hook and line. Presently, large numbers are being taken near Stung Treng in Cambodia by explosives. It is marketed fresh or dried and salted. ''B. truncatus'' is known from the Mekong and Chao Phraya River basins. This species grows up to 60.0 cm (23.6 in) SL. ''B. truncatus'' migrates upstream through the Khone Falls in June to Ju ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georges Cuvier
Jean Léopold Nicolas Frédéric, Baron Cuvier (; 23 August 1769 – 13 May 1832), known as Georges Cuvier, was a French naturalist and zoologist, sometimes referred to as the "founding father of paleontology". Cuvier was a major figure in natural sciences research in the early 19th century and was instrumental in establishing the fields of comparative anatomy and paleontology through his work in comparing living animals with fossils. Cuvier's work is considered the foundation of vertebrate paleontology, and he expanded Linnaean taxonomy by grouping classes into phylum, phyla and incorporating both fossils and living species into the classification. Cuvier is also known for establishing extinction as a fact—at the time, extinction was considered by many of Cuvier's contemporaries to be merely controversial speculation. In his ''Essay on the Theory of the Earth'' (1813) Cuvier proposed that now-extinct species had been wiped out by periodic catastrophic flooding events. In th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurasia
Eurasia (, ) is the largest continental area on Earth, comprising all of Europe and Asia. Primarily in the Northern and Eastern Hemispheres, it spans from the British Isles and the Iberian Peninsula in the west to the Japanese archipelago and the Russian Far East to the east. The continental landmass is bordered by the Atlantic Ocean and Africa to the west, the Pacific Ocean to the east, the Arctic Ocean to the north, and by Africa, the Mediterranean Sea, and the Indian Ocean to the south. The division between Europe and Asia as two continents is a historical social construct, as many of their borders are over land; thus, in some parts of the world, Eurasia is recognized as the largest of the six, five, or four continents on Earth. In geology, Eurasia is often considered as a single rigid megablock. However, the rigidity of Eurasia is debated based on paleomagnetic data. Eurasia covers around , or around 36.2% of the Earth's total land area. It is also home to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asia
Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an area of , about 30% of Earth's total land area and 8.7% of Earth's total surface area. The continent, which has long been home to the majority of the human population, was the site of many of the first civilizations. Its 4.7 billion people constitute roughly 60% of the world's population. In general terms, Asia is bounded on the east by the Pacific Ocean, on the south by the Indian Ocean, and on the north by the Arctic Ocean. The border of Asia with Europe is a historical and cultural construct, as there is no clear physical and geographical separation between them. It is somewhat arbitrary and has moved since its first conception in classical antiquity. The division of Eurasia into two continents reflects East–West cultural, ling ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southeast Asia
Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical United Nations geoscheme for Asia#South-eastern Asia, south-eastern region of Asia, consisting of the regions that are situated south of mainland China, east of the Indian subcontinent, and north-west of mainland Australia. Southeast Asia is bordered to the north by East Asia, to the west by South Asia and the Bay of Bengal, to the east by Oceania and the Pacific Ocean, and to the south by Australia (continent), Australia and the Indian Ocean. Apart from the British Indian Ocean Territory and two out of atolls of Maldives, 26 atolls of Maldives in South Asia, Maritime Southeast Asia is the only other subregion of Asia that lies partly within the Southern Hemisphere. Mainland Southeast Asia is completely in the Northern Hemisphere. East Timor and the southern portion of Indonesia are the only parts that are south of the Equator. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Asia
East Asia is the eastern region of Asia, which is defined in both geographical and ethno-cultural terms. The modern states of East Asia include China, Japan, Mongolia, North Korea, South Korea, and Taiwan. China, North Korea, South Korea and Taiwan are all unrecognised by at least one other East Asian state due to severe ongoing political tensions in the region, specifically the division of Korea and the political status of Taiwan. Hong Kong and Macau, two small coastal quasi-dependent territories located in the south of China, are officially highly autonomous but are under Chinese sovereignty. Japan, Taiwan, South Korea, Mainland China, Hong Kong, and Macau are among the world's largest and most prosperous economies. East Asia borders Siberia and the Russian Far East to the north, Southeast Asia to the south, South Asia to the southwest, and Central Asia to the west. To the east is the Pacific Ocean and to the southeast is Micronesia (a Pacific Ocean island group, clas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Subcontinent
The Indian subcontinent is a physiographical region in Southern Asia. It is situated on the Indian Plate, projecting southwards into the Indian Ocean from the Himalayas. Geopolitically, it includes the countries of Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan, and Sri Lanka."Indian subcontinent". '' New Oxford Dictionary of English'' () New York: Oxford University Press, 2001; p. 929: "the part of Asia south of the Himalayas which forms a peninsula extending into the Indian Ocean, between the Arabian Sea and the Bay of Bengal. Historically forming the whole territory of Greater India, the region is now divided into three countries named Bangladesh, India and Pakistan." The terms ''Indian subcontinent'' and ''South Asia'' are often used interchangeably to denote the region, although the geopolitical term of South Asia frequently includes Afghanistan, which may otherwise be classified as Central Asian.John McLeod, The history of India', page 1, Greenwood Publishing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wallago Attu
''Wallago attu'' is a freshwater catfish of the family Siluridae, native to South and Southeast Asia. It is commonly known as helicopter catfish or wallago catfish. It has known by various names in different regions and languages, such as Borali(বৰালি ) in Assamese , Tamil ஆத்துவாளை (Aaththu vaalai), Manipuri Sareng, the Odisha Balia(ବାଳିଆ), the Bengal Boal, the Sylheti Gual or the Malaysian and Indonesian Tapah are also occasionally used in English. ''W. attu'' is found in large rivers and lakes in two geographically disconnected regions (disjunct distribution), with one population living over much of the Indian Subcontinent and the other in parts of Southeast Asia. The species can reach a total length of .Roberts, T.R. (2014): ''Wallago'' Bleeker, 1851 and ''Wallagonia'' Myers, 1938 (Ostariophysi, Siluridae), Distinct Genera of Tropical Asian Catfishes, with Description of †''Wallago maemohensis'' from the Miocene of Thailand. ''Bulletin o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wels Catfish
The wels catfish ( or ; ''Silurus glanis''), also called sheatfish or just wels, is a large species of catfish native to wide areas of central, southern, and eastern Europe, in the basins of the Baltic, Black and Caspian Seas. It has been introduced to Western Europe as a prized sport fish and is now found from the United Kingdom east to Kazakhstan and China and south to Greece and Turkey. It is a freshwater fish recognizable by its broad, flat head and wide mouth. Wels catfish can live for at least fifty years. Etymology The English common name comes from Wels, the common name of the species in German language. ''Wels'' is a variation of Old High German ''wal'', from Proto-Germanic ''*hwalaz'' – the same source as for '' whale'' – from Proto-Indo-European ''*(s)kʷálos'' ('sheatfish'). Description The wels catfish's mouth contains lines of numerous small teeth, two long barbels on the upper jaw and four shorter barbels on the lower jaw. It has a long anal fin tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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